我目前正在学习服务、api和amqp消息传递系统,准确地说是rabbitmq,我正在关注这个
tutorial
关于rabbitmq消息传递。我把一切都做好了,但我想在我的项目中改变一些东西。我想从路由和控制器调用发布者和使用者脚本,而不是在终端中键入它们(
php src/publisher.php
或
php src/consumer.php
)
首先,我创建了两个路由:
Route::get('/send-message', 'ServiceAController@index');
Route::get('/receive-message', 'ServiceBController@index');
第一个路由(send message)用于将http请求作为消息发送到rabbitmq,这是通过postman post请求完成的,在这里我插入了所需的参数。此路线的控制器工作正常,如下所示:
public function index(Request $request){
//Returning status 200 and sending message if amount is in range
if( (-100000000 <= $request->amount ) && ($request->amount <= 100000000 )){
//Sending message to RabbitMQ
$amount = $request->amount;
$currency = $request->currency;
//Saving request data to variable to publish it
$messageContent = json_encode([
'amount' => $amount * 100,
'currency' => $currency,
]);
//Sending broker message
$host = 'secret';
$port = 5672;
$user = 'secret';
$pass = 'secret';
$vhost = 'secret';
$exchange = 'balance';
$queue = 'local_balance';
$connection = new AMQPStreamConnection($host, $port, $user, $pass, $vhost);
$channel = $connection->channel();
/*
The following code is the same both in the consumer and the producer.
In this way we are sure we always have a queue to consume from and an
exchange where to publish messages.
*/
/*
name: $queue
passive: false
durable: true // the queue will survive server restarts
exclusive: false // the queue can be accessed in other channels
auto_delete: false //the queue won't be deleted once the channel is closed.
*/
$channel->queue_declare($queue, false, true, false, false);
/*
name: $exchange
type: direct
passive: false
durable: true // the exchange will survive server restarts
auto_delete: false //the exchange won't be deleted once the channel is closed.
*/
$channel->exchange_declare($exchange, 'direct', false, true, false);
$channel->queue_bind($queue, $exchange);
$messageBody = $messageContent;
$message = new AMQPMessage($messageBody, ['content_type' => 'application/json', 'delivery_mode' => AMQPMessage::DELIVERY_MODE_PERSISTENT]);
$channel->basic_publish($message, $exchange);
$channel->close();
$connection->close();
//Returning json response of HTTP payload
$response = json_encode([
'amount' => +number_format($amount, 2, '.', ''),
'currency' => $currency,
]);
return $response;
}else{
//Returning status 400 if amount is not in acceptable range
abort(400, 'Amount is not in acceptable range'); //Returning code 400 if condition isn't met
}
}
但是我的
问题
从我将消费者代码放入ServiceBController开始,与前一个相同。我的ServiceBController如下所示:
public function index(){
$host = 'secret';
$port = 5672;
$user = 'secret';
$pass = 'secret';
$vhost = 'secret';
$exchange = 'balance';
$queue = 'local_balance';
$connection = new AMQPStreamConnection($host, $port, $user, $pass, $vhost);
$channel = $connection->channel();
/*
The following code is the same both in the consumer and the producer.
In this way we are sure we always have a queue to consume from and an
exchange where to publish messages.
*/
/*
name: $queue
passive: false
durable: true // the queue will survive server restarts
exclusive: false // the queue can be accessed in other channels
auto_delete: false //the queue won't be deleted once the channel is closed.
*/
$channel->queue_declare($queue, false, true, false, false);
/*
name: $exchange
type: direct
passive: false
durable: true // the exchange will survive server restarts
auto_delete: false //the exchange won't be deleted once the channel is closed.
*/
$channel->exchange_declare($exchange, 'direct', false, true, false);
$channel->queue_bind($queue, $exchange);
/**
* @param AMQPMessage $message
*/
function process_message(AMQPMessage $message){
$messageBody = json_decode($message->body);
$amount = $messageBody->amount;
$currency = $messageBody->currency;
file_put_contents('C:/xampp/htdocs/nsoft/data' . '.json', $message->body);
$message->delivery_info['channel']->basic_ack($message->delivery_info['delivery_tag']);
}
/*
queue: Queue from where to get the messages
consumer_tag: Consumer identifier
no_local: Don't receive messages published by this consumer.
no_ack: Tells the server if the consumer will acknowledge the messages.
exclusive: Request exclusive consumer access, meaning only this consumer can access the queue
nowait:
callback: A PHP Callback
*/
$consumerTag = 'local.consumer';
$channel->basic_consume($queue, $consumerTag, false, false, false, false, 'process_message');
/**
* @param \PhpAmqpLib\Channel\AMQPChannel $channel
* @param \PhpAmqpLib\Connection\AbstractConnection $connection
*/
function shutdown($channel, $connection){
$channel->close();
$connection->close();
}
register_shutdown_function('shutdown', $channel, $connection);
while (count($channel->callbacks)) {
$channel->wait();
}
}
在postman中使用get请求调用它之后,我得到以下错误:
symfony\component\debug\exception\fatalerrorexception:在第227行的文件C:\xampp\htdocs\nsoft\vendor\php amqplib\php amqplib\phpamqplib\wire\io\streamio.php中,超过了30秒的最长执行时间。
我已经被这个错误困扰了好几天了,似乎找不到解决办法,所以我需要一些人的帮助。我做错什么了?作为参考,当我将同一个使用者脚本作为单独的文件放置时,它也可以工作(
src/consumer.php
)当我通过我的终端呼叫时。如有任何帮助,我们将不胜感激。
